GMC T Series 1994 Repair Manual page 717

| jy | Inspect
Figures 33 and 34
1. Intermediate clutch piston (636) for:
• Cracks.
• Damage.
2. Springs (635) for:
• Collapsed coils.
• Distortion.
3. Cup plug (530), orifice is open approximately
0.51 mm (0.020 inch).
530 PLUG, ORIFICE CENTER SUPPORT
633 RING, SNAP CENTER SUPPORT/CASE
634 RING, SNAP INTERMEDIATE CLUTCH
635 SPRING AND RETAINER ASM., INTERMEDIATE CLUTCH
636 PISTON, INTERMEDIATE CLUTCH
637 SEAL, INTERMEDIATE CLUTCH (INNER)
638 SEAL, INTERMEDIATE CLUTCH (OUTER)
639 RING, OIL SEAL
640 SUPPORT AND RACE ASSEMBLY, CENTER
642 WASHER, THRUST SUPPORT/REACTION DRUM
Figure 33 Center Support and Intermediate Clutch
Piston
|h|h| Assemble
Figures 33,35 and 36
1. Lubricate new inner and outer clutch piston seals
(637 and 638) and seal pockets in housing with
DEXRON®-IIE transmission fluid.
2. Seals (637 and 638) on piston (636) with lips
facing away from spring pockets.
3. Clutch piston (636) on center support (640) with
J 21363.
4. Spring and retainer assembly (635) and snap ring
(634). Using J 38734 Compressor Adapter. Align
springs with pockets in housing.
5. New seal rings (639) on new center support hub
(640) using seal tools J 38735.
•
[ T ] Important
RH0131-4L80-E
• chamfered end to size all other seals. Start with
lower ring, then work towards top.
• Pre heat seals (639) prior to installation in hot
tap water.
Use TRANSJEL™ J 36850 or equivalent to
keep rings (639) tightly sealed.